Bash util functions

util.sh

pathadd() {
  # Add a bin to path if it isn't there already
    if [ -d "$1" ] && [[ ":$PATH:" != *":$1:"* ]];
    then
        if [ "$2" == "pre" ];
        then
            PATH="$1:$PATH";
        else
            PATH="${PATH:+"$PATH:"}$1";
        fi
    fi
}

pathdel() {
  local tmp_bin_path

  # End condition
  if [[ ":$PATH:" == *":$1:" ]]; then
    tmp_bin_path="${1//\//\\/}"
    PATH="${PATH//:$tmp_bin_path/}"
  elif [[ ":$PATH:" == *":$1:"* ]]; then
    tmp_bin_path="${1//\//\\/}"
    PATH="${PATH//$tmp_bin_path:/}"
  fi
}